95091-86-4Relevant articles and documents
Utility of Nitrogen Extrusion of Azido Complexes for the Synthesis of Nitriles, Benzoxazoles, and Benzisoxazoles
Nimnual, Phongprapan,Tummatorn, Jumreang,Thongsornkleeb, Charnsak,Ruchirawat, Somsak
, p. 8657 - 8667 (2015/09/15)
The utility of the nitrogen extrusion reaction of azido complexes, generated in situ from the corresponding aldehydes or ketones with TMSN3 in the presence of ZrCl4 or TfOH, has been described. These azido complexes could undergo three different pathways, depending on the substrates. First, azido methanolate complexes or imine diazonium ions could lead to benzisoxazole products via an intramolecular nucleophilic substitution. Second, imine diazonium ions could also undergo either the elimination of proton to provide nitrile products in good to excellent yields or an aryl migration, followed by an intramolecular nucleophilic addition, to give benzoxazole products in good yields.
NON-METALLOCENE CATALYSTS HAVING TETRAZOL GROUP FOR OLEFIN POLYMERIZATION AND POLYMERIZING METHOD OF OLEFIN USING THE SAME
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, (2010/10/19)
The present invention provides a non-metallocene transition metal compound that is easily produced, includes a tetrazol group having the high polymerization activity and high temperature stability in the polymerization of olefins, and a catalytic composit
Urotropin synthesis of 3,5-di-tert-butylsalicylic acid derivatives
Vol'eva,Belostotskaya,Komissarova,Kurkovskaya,Pleshakova,Prokofeva
, p. 1488 - 1491 (2008/09/16)
The stability of 3,5-di-tert-butylsalicylic aldehyde against oxidation is due to autoinhibiting of the chain process. However its oxidation into 3,5-di-tert-butylsalicylic acid was performed at the use of acetyl protection of the hydroxy group. In reaction of 6-bromo-2,4-di-tert-butylphenol with urotropin the formation was discovered of 3,5-di-tert-butylsalicylic acid, its nitrile and amide.